CVE-2015-6997

The X.509 certificate-trust implementation in Apple iOS before 9.1 does not recognize that the kSecRevocationRequirePositiveResponse flag implies a revocation-checking requirement, which makes it easier for man-in-the-middle attackers to spoof endpoints by leveraging access to a revoked certificate.

• CWE-254

• http://lists.apple.com/archives/security-announce/2015/Dec/msg00002.htmlVendor Advisory
• http://lists.apple.com/archives/security-announce/2015/Oct/msg00002.htmlVendor Advisory
• http://www.securityfocus.com/bid/77268
• http://www.securitytracker.com/id/1033929
• https://support.apple.com/HT205370Vendor Advisory
• https://support.apple.com/HT205641Vendor Advisory
• http://lists.apple.com/archives/security-announce/2015/Dec/msg00002.htmlVendor Advisory
• http://lists.apple.com/archives/security-announce/2015/Oct/msg00002.htmlVendor Advisory
• http://www.securityfocus.com/bid/77268
• http://www.securitytracker.com/id/1033929
• https://support.apple.com/HT205370Vendor Advisory
• https://support.apple.com/HT205641Vendor Advisory

Published

Oct 23, 2015

Last Modified

Jun 17, 2026

Status

Modified

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